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Finding the Third Proportional to 130.69 and 202.41

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Solution

The third proportional to 130.69 and 202.41 is: 313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.69 : 202.41 = 202.41 : x
  2. Step 2: Convert to fraction form
    130.69/202.41 = 202.41/x
  3. Step 3: Cross multiply
    130.69x = 202.41 × 202.41
  4. Step 4: Simplify right side
    130.69x = 40,968.29
  5. Step 5: Solve for x
    x = 40,968.29/130.69
  6. Step 6: Final answer
    x = 313.48

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.